Sludge filtration device comprising a filter piston, and sludge

Details Sludge filtration device comprising a filter piston, and sludge Sludge filtration device comprising a filter piston, and sludge

1997-10-24

2000-08-29

Popovics, Robert J.

Liquid purification or separation

Processes

Separating

210780, 210791, 210397, 210406, 210408, 2104161, 100 37, 100112, 100116, 100215, B01D 3301, B30B 904

Patent

active

061103888

ABSTRACT:
The sludge filtration device comprises: a filter (1) placed over an approximately horizontal box (4), this filter (1) constituting, in its filtration position, the bottom of a filter chamber (8) of essentially vertical axis; a piston (10) suitable for closing the filter chamber in the top part; means (3, 11) for causing relative movement between the box (4) provided with the filter (1) and the piston (10) so that a liquid filtrate flows downwards through the filter (1) and so that a cake of solid matter remains on the filter (1) at the end of the operation; and a scraper device (31) provided for removing this cake. The piston is made in the form of a filter piston (10) so that a liquid effluent passes through the filter piston (10) as the volume of the filter chamber (8) is being decreased, and a suction pumping means (P) is provided for removing the effluent above the filter piston (10).

REFERENCES:
patent: 4249400 (1981-02-01), Arendt
patent: 4343233 (1982-08-01), Burgin
patent: 4346653 (1982-08-01), Rodak
patent: 4347137 (1982-08-01), Dick, Jr.
patent: 4676079 (1987-06-01), Czauderna
patent: 4995972 (1991-02-01), Kramer et al.
patent: 5366626 (1994-11-01), Pierson

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